Interchangeable shoe upper



FIG. 1 is a side view of an interchangeable shoe upper showing my new design;

FIG. 2 is an opposite side view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

In FIG. 3 and FIG. 5, the broken lines showing are stitch marks and form no part of the claimed design. 

The ornamental design for an interchangeable shoe upper, as shown and described. 